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| author | Nic Gaffney <gaffney_nic@protonmail.com> | 2024-02-06 05:01:47 -0600 |
|---|---|---|
| committer | Nic Gaffney <gaffney_nic@protonmail.com> | 2024-02-06 05:01:47 -0600 |
| commit | fb72d05d3d8b4b37a4a8dc4cf4355eb0a3fafeef (patch) | |
| tree | 9ba651f7331425cecadc8be630156f873e1b22be /notes.txt | |
| parent | ecf636f2797647d5dfc38a4562cae53fe275217d (diff) | |
| download | gftos-fb72d05d3d8b4b37a4a8dc4cf4355eb0a3fafeef.tar.gz | |
Updated gitignore
Diffstat (limited to 'notes.txt')
| -rw-r--r-- | notes.txt | 23 |
1 files changed, 0 insertions, 23 deletions
diff --git a/notes.txt b/notes.txt deleted file mode 100644 index 9016799..0000000 --- a/notes.txt +++ /dev/null @@ -1,23 +0,0 @@ - /* Defenitions: - * Segment: - * A logically contiguous chunk of memory with consistent properties from the cpus perspective - * - Just a bunch of memory dedicated for a specific purpose - * Segment Register: - * A register of the CPU that refers to a segment for a particular purpose (CS, DS, SS, ES) - * or for general use. (FS, GS) - * - Code segment, Data segment, ... - * Segment Selector: - * A reference to a descriptor, which you can load into a segment register; the selector is an offset - * into a descriptor table pointing to one of its entries. - * These entries are typically 8 bytes long, therefore - * bits 3 and up only declare the descriptor table entry offset - * bit 2 specifies GDT or LDT - * bits 0-1 declare ring level that needs to correspond to the descriptor table entry's DPL field. - * GENERAL PROTECTION FAULT if it doesn't - * If it does correspond then the CPL level of the selector used is changed accordingly - * - A pointer to an entry in the DT - * Segment Descriptor: - * An entry in a descriptor table. - * These are a binary data structure that tells the CPU the attributes of a given segment - * - A binary number that describes a segment - */ |